D-ring



FIG. 1 is a perspective view;

FIG. 2 is a top view;

FIG. 3 is a front view with the back view being a mirror image thereof;

FIG. 4 is a bottom view; and,

FIG. 5 is a right side view with the left side being a mirror imagethereof.

The ornamental design for D-ring, as shown and described.